// Tien.h
#ifndef Tien_H
#define Tien_H

// lop nay dinh nghia doi tuong Tien & cac toan tu nap chong lien quan
// cac ham o day chi la goi y, can khai bao va dinh nghia chinh xac hon
// can dinh nghia day du cac ham khoi tao phuc vu cho chuyen doi kieu tu dong

class Tien
{
    public:
        Tien();
		bool BoiCua10(int);
        /*
        friend const Tien& operator+ ();
        friend const Tien& operator- ();
        friend const Tien& operator* ();
        friend const Tien& operator/ ();
        friend const int operator/ ();
        */
		int Valid(int);
    private:
		long int tongTien;
		int rutMin;
		int rutMax;
};
#endif // Tien_H
